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13.1 Mollusks brettv
Question | Answer |
---|---|
What is the mantle? | a thin layer of tissue that covers the body organs |
What is the visceral mass? | it is the area in a mollusk that contains most of its organs |
What is a gill? | gills are located in the mantle cavity and let out carbon dioxide and exchange it with oxygen |
Describe an open circulatory system | the heart moves the blood into the open spaces around the body organs. The blood which contains nutrients and oxygen, completely surrounds and nourishes the body organs |
Give 3 examples of gastropods | snails, conchs, and abalones |
Describe the radula | it is a tonguelike organ that has a row of teeth to obtain food |
What can you compare a radula to? | a nail file |
What type of circulatory system do gastropods have? | an open circulatory system |
Give an example of a bivalve | clams |
What are bivalves? | very strong muscles on mollusks |